Improvement in gun-locks



UNITED STATES PATENT Orriea.

EBEN T. STARR, OF NEW YORK, N. Y.

IMPROVEMENT IN GUN-LOCKS.

Specification forming part of Letters Patent No. 5 1,629, dated December19, 1865 I To all whom it may concern:

Be it known that I, EBEN T. STARR, of the city, county, and State of NewYork, have invented a new and useful Improvement in the Locks ofRevolving and other Repeating Fire- Arms; and I do hereby declare thatthe following is a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming part of thisspecification, in which- Figures 1 and 2 represent vertical longitudinalsections of part of the frame of a pistol and side views of the lock,representing the parts of the latter in different positions. Fig. 3 is afront view of the parts of the lock. Fig. 4. is a transverse section inthe plane indicated by the line :0 m in Fig. 1. Fig. 5 is a view of theopposite side of the trigger to that shown in Figs. 1 and 2.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention relates to the locks of what are known as self-cocking,*revolving, or repeating firearms-that is to say, revolving or repeatingfire-arms the hammers of which are drawn back for rapidly repeatingfiring through the agency of the trigger or of a lever under the stock.

It consists in constructing the trigger, the

. lever for drawing back the hammer, and the sear in one piece-01, inother words, making one piece serve the three purposes of a trigger, alever for drawing back the hammer, and a sear.

It also consists in certain novel means of combining the hammer with atrigger or a lever which serves the purpose of drawing it back, wherebythe hammer is enabled to be both drawn back and let off by the saidtrigger or lever for rapidly repeated firing, but permitted to be cookedand let off in the common way, when desired.

To enable others skilled in the art to make and apply my invention, 1will proceed to describe it with reference to the drawings.

A is the frame of the arm. Bis the hammer, working on a pin, 0, securedin the frame, and having its tumbler B of the usual form, except that arecess, a, is formed entirely across one side, below the pin 0, toreceive a projection, 11, which is formed upon the corresponding side ofthe rear portion of the piece E, which serves as the trigger, the sear,and a lever for drawing back the hammer. Y

(J is the mainspring, applied substantially in the usual manner.

D is a short pin, fitted to work easily in a hole drilled transverselythrough the tumbler B, below and forward of the pin 0. This pin is madewith a head, d, at one end, as shown in Fig. 4, and a rounded point atthe other, and inserted from the opposite side of the tumbler to that inwhich the recess a is formed, and this head is received within a recess,0, provided in the tumbler on the opposite side to the recess a. Thesaid recess 6 also receives a spring, f, which i secured to the tumblerby a screw, g, and which presses upon the head 01 in such manner as tocause the protrusion of the rounded point of the pin 01 into the recessa when it is not pressed back in the opposite direction by other means,as will be hereinafter described. The object of making the pin D with ahead, d, is to keep it in the tumbler in putting the lock together andtaking it apart.

The piece E, which constitutes the trigger, the lever for drawing backthe hammer, and the sear, works upon a pin, 0, like an ordinary trigger,and only differs essentially from triggers which commonly have the searIt made in the same piece in having formed upon it, in rear of the searh, the fiat projection 11, which, when the head of the hammer is down orforward, as shown in Fig. 1 in black outline, (and there is no backpressure of the finger on the lower part of the trigger,) occupies aposition just below the pin D. The trigger-spring j is applied in frontof the trigger, and operates, in the usual manner, to throw forward thelower part of the trigger, upon which the finger acts. The extremity ofthe projection b is beveled on the side next the tumbler, as shown an inFigs. 4. and 5, and in dotted outline in Figs. 1 and 2.

The operation of drawing back the hammer.

by means of the piece E, or, as it may be termed, the trigger, is asfollows: When the hammer is down or forward, as shown in Fi 1 in blackoutline, the drawing back of the trigger by the finger brings the upperedge of the projection 1) into operation on the under side of theparallel portion of the pin D, beyond its rounded point, and so throwsthehammer back, as shown in red outline in Fig. l; but as the hammerarrives near the cooked position the J. STEADMAN.

Metal Punch.

Patented Dec. 19, 1865.

